As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS REPORTED THAT THE LANDING GEAR WOULD NOT COME UP. MAINTENANCE INSPECTED ALL UP AND DOWNLOCK SWITCHES AS WELL AS THE SQUAT SWITCHES. PERFORMED LANDING GEAR SWINGS AND ALL OPERATIONALLY CHECKED GOOD. COULD NOT DUPLICATE DISCREPANCY. REFERENCE B1900D MM 32-30-00.